/*
 *  Copyright 2013 National Institute of Advanced Industrial Science and Technology
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.sss.mapreduce;

import java.io.IOException;
import java.util.List;

/**
 * interface for db.
 * @author nakada
 *
 */
public interface DB {
  List<byte[]> range(byte[] prefix, byte[] sentinel, int count, boolean binc) throws IOException;
  List<byte[]> ranged(byte[] prefix, byte[] sentinel, int count, boolean binc) throws IOException;
  void putlist(byte[][] kvs) throws IOException;
  int rangeout(byte[] prefix, byte[] sentinel, int count, boolean binc) throws IOException;
  List<byte[]> fwmkeys(byte[] prefix, int max) throws IOException;
  byte[] get(byte[] key) throws IOException;
  void close() throws IOException;
  List<byte[]> getlist(byte[][] keys) throws IOException;
  void outlist(byte[][] keys) throws IOException;
}
